Home / 278,789.65-384,721.85-151,465.55

Finding the Fourth Proportional to 278,789.65, 384,721.85 and 151,465.55

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Solution

The fourth proportional to 278,789.65, 384,721.85 and 151,465.55 is: 209,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,789.65 : 384,721.85 = 151,465.55 : x
  2. Step 2: Convert to fraction form
    278,789.65/384,721.85 = 151,465.55/x
  3. Step 3: Cross multiply
    278,789.65x = 384,721.85 × 151,465.55
  4. Step 4: Simplify right side
    278,789.65x = 58,272,105,062.32
  5. Step 5: Solve for x
    x = 58,272,105,062.32/278,789.65
  6. Step 6: Final answer
    x = 209,018.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.